document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=925773>Question 925773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all solutions to the equation below on the interval [0, 2&#960;). Enter them from smallest to largest; enter DNE in any empty blank.\r<BR>\n" );
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document.write( "cos (2x) + cos (x) = 2\r<BR>\n" );
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document.write( "x =   <BR>\n" );
document.write( "x = \r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561787 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=561787\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all solutions to the equation below on the interval [0, 2&#960;). Enter them from smallest to largest; enter DNE in any empty blank.<BR>\n" );
document.write( "cos (2x) + cos (x) = 2 <BR>\n" );
document.write( "***<BR>\n" );
document.write( "2cos^2(x)-1+cosx=2<BR>\n" );
document.write( "2cos^2(x)+cosx-3=0<BR>\n" );
document.write( "(2cosx+3)(cosx-1)=0<BR>\n" );
document.write( "2cosx+3=0<BR>\n" );
document.write( "cosx=-3/2 (reject,1 &#8804; cosx &#8804; 1)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cosx-1=0<BR>\n" );
document.write( "cosx=1<BR>\n" );
document.write( "x=0<BR>\n" );
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